simple past tense and past participle of gear
"The old clock finally stopped working after we geared it back to its original settings."
equipped with or connected by gears or having gears engaged
"The old bicycle was geared low to make climbing that steep hill easier for my tired legs."
Fitted with (some kind or number of) gears.
"The vintage bicycle was geared low to help me climb the steep hill without pedaling too fast."